Which of the following is true regarding extinction? a. single events or several causes working together to produce extinction in a short period is referred to as mass extinction. b. the rate of extinction is steady from clade to clade as are the number of species contained within a clade. c. if the rate of speciation in a clade is equal to or less than the rate of extinction, the clade will survive. d. extinction that occurs in a relatively short period of time is referred to as background extinction.

What are the responsibilities of the region of the brain highlighted below? =+= will rate brainiest =+=

Coral have a symbiotic relationship with what in order to eat?

Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary